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Mathematics ECAT Pre Engineering Chapter 12 Trigonometric Functions and Identities Online Test MCQs With Answers
Question # 1
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Question # 2
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Question # 3
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Question # 4
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Question # 5
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Question # 6
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Question # 7
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Question # 8
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Question # 9
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Question # 10
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Question # 11
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Question # 12
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Question # 13
Tan(
α
-
β
)=
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Question # 14
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Question # 15
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Question # 16
The law of cosines reduces to a2 +c2 =b2 for
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α = 90°
β = 90°
γ = 90°
α +β +γ =180°
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Question # 17
sin(180° -
θ)=
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cos
θ
-cos
θ
Tan
θ
Sin
θ
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Question # 18
cos (
α
-
β
) = cos
α
cos
β
+ sin
α
sin
β
is true for all
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α
>
β
> 0
α
>
β
β
>
α
None of these
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Question # 19
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Question # 20
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Question # 21
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Question # 22
In any triangle ABC,with usual notationαsinβ =____;
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b sinα
bsinβ
αsinα
None of these
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Question # 23
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Question # 24
sin (
α +
β)=
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sin
α
cos
β
- cos
α
sin
β
sin
α
cos
β
- cos
α
sin
β
sin
α
cos
α
- cos
β
sin
β
sin
α
cos
α
+ cos
β
sin
β
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Question # 25
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Question # 26
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Question # 27
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1
2
-2
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Question # 28
2cos2 a/2 =______;
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1+sina
1-sina
1+cosa
1-cosa
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Question # 29
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Question # 30
sin
2
α
cos
2
α
=
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-1
0
1
None of these
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Question # 31
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Question # 32
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-sin
θ
cos
θ
sin
θ
-cos
θ
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